Senior Web Compatibility Engineer

This position involves ensuring that websites function correctly within DuckDuckGo’s browser applications on Mac, Windows, iOS, and Android. Daily tasks include debugging complex issues in external code, distinguishing between site errors, browser bugs, and breakage caused by privacy features. You will also lead incident response when major sites fail and implement durable fixes across all supported platforms. Recent initiatives have involved reverse-engineering site detection methods, creating shims for browser APIs, and developing automated pipelines to triage reported problems. The role requires a deep understanding of web standards, web components, and browser APIs. Candidates should have at least seven years of experience building and debugging complex web applications using vanilla JavaScript. Familiarity with Swift, Kotlin, C#, C++, or Python is considered a bonus but not mandatory. The company operates as a remote-first organization, meaning this position is fully remote. This opportunity suits individuals who thrive on end-to-end project ownership and enjoy solving intricate technical challenges. It is ideal for those who want to be the resident expert on web compatibility issues and contribute to maintaining a seamless user experience. The team values a culture of trust and inclusivity, where members take full responsibility for their work from initial scoping through to postmortem analysis.